Apparatus for the manufacture of compound lard.



W. MATTHBISS. APPARATUS FOR THE MANUFACTURE OF com'ormn LARD.

1 APPLICATION FILED APB-.14, 1910.

Patented May 30, 1911.

ble pure lard ting apparent,

UNITED sm ras PATENT OFFICE."

WILLIAM MATTHEISS, OF BALTIMORE, MARYLAND.

To allwho m it ma/y concern:

' Be it known that I, WILLIAM MA'rrHmss, of the city of Baltimore andState of Maryland, have invented certain Improvements in Apparatus forthe Manufacture of Compound Lard, of which'the following is aspecification. I y

This invention relates to an improved apparatus to be used in-themanufacture of what is known to the trade,-as. compound lard, that is tosay,an article which is composed of cotton seed oil, and the solid fatas expressed from ordinary fat and properly designated as stearin; andit consists in a peculiar construction of the apparatus hereinafterdescribed. I

In Letters Patent No. 980,809'granted to me on the 3rd day of Januar1911, I have described a process of menu acturin compound lardof whichdescription the ollowing is an extract:-- I

Many efforts have been made to combine cotton seed oil and stearin withthe view to produce a body of uniform consistency, but to-thebest of myknowledge such a result has not been attained prior to mypresentinvention;

- The difliculty met with isthe tendency of such dissimilar materials ascotton seed-oil and 'stearin, after being heated, to separate uponcooling, and in such case, the product consists of a loosemechanicalmixture of the two ingredients in ractically the same condition as theywere fore the mixing operation, except that the stearin isreduced tosmall particles which are held in suspension in the oil. This granularcondition of the finished product will be produced by suddenrefrigeration of the heated compound, but

av similar result is found if the compound is allowed to standundisturbed during .a gradual and natural cooling. By experiment I havefound that when one hundred pounds ofcotton seed oil is added to fifteenor twenty pounds of stearin" and the mixture heated to the boilin pointof water, then stirred for a reasonab e time at the same temperature,then gradually re duced in temperature while still being stirred,tobetween eighty andninety degrees Fahrenheit, the. finished productWlll resemin texture, no granulation beand this desirable condition ismamtained indefinitely. Y

I Specification ct Letters Patent.

Application filed April 14, 1910. Serial No. 565,410.

AIPARATUS FOR THE MANUFACTURE OF COMPOUND LARD.

Patented May 30, 1911.

From the foregoing extract it will be understood that the process is onethathas to be carried out, with considerable exactitude; and it followsthereforeihat to successfully produce the product in accordance with thesaid process, the apparatus employed must be such as to enable theattendant to regulate the various parts of the process, particularlywith respect to tem ratures of the materials. I therefore in t e presentapplication describe in detail the apparatus which after muchexperiment, has been found essential to effect the results above setforth.

In the further description of the said invention which follows,reference is made to the accom anying drawing forming a part hereof anin which,-

Figure 1 is a partly sectional side elevation of the improved apparatus,and Fig. 2

a section taken on the dotted line (8-2), Fig. 1.

Referring now to the drawing, 1 is a stationary cylinder having a doublewall whereby a continuous space 2 is produced, into which space steam or,water, or both conjointly may be introduced. For the purpose ofintroducing steam into the space 2, I provide the ipe 3 leading from thespace of the cylin er to the steam space of a boiler,

and overn the flow of steam by meansof a suite le valve 6 in the said piWater is introduced into the bottom 0 thespace 2 through a pipe 4 whichis in communication with any source of supply, and which like the pipe 3is provided with a regulating valve d.

In order that the water in the space 2 may not reach any pressure inexcess of a column equivalent to the height of the top of the cylinderabove the source of water sup- ,ly, and to admit of the gradual coolingof eated'water in the s ace, effected as and, for a purpose hereina erdescribed, I provide the said space with a continuously open overflowipe 5 which may lead to a drain.

The cylinder 1 has a man hole with a suitable oover 7, which givesaccess to its interior for the purpose of-cleansing, and is alsoprovided with an open vent p1pe 8 to stearin are separately forced, tobe mixed in accordance with the process hereinbefore described.

is a rotary. shaft'which. extends longitudinally through the cylinderand is propj erly packed to prevent leakage. The stuifing boxes whichareexterior of the cylinder so as to allow of their being packed withoutcontaminating the contents of the cylinder, are denoted by e, and itwill be seen that to properly apply them, the se arated inner,

and outer walls at the ends 0 the cylinder are united by blocks f, whichalso constitute portions of the stuffing boxes. The shaft 10 at one endthereof is supported by an exterior bearing 12,.and between the saidhearing and the adjacent stufling box, are placed the tight drivingpulley 13, and the loose pulley 15. Secured to the rotary shaft 10 are asystem of agitating arms or blades, 16

-which extend preferably in a radial direcpoint by the jointintroduction of both steam and water, when the cotton seed oil is forcedinto the cylinder, and afterward the melted stearin at 212 degreesFahrenheit, or a little higher. The shaft .10 is then put in rotationand the blades 16 acting on the oil and stearin,

cause the same to be thoroughly mixed 'As soon-asthe mixing of the oiland stearin is fully accomplished, steam if still turned on, is shut ofiand coldwater alone forced into the space 2, and this is continueduntilthe temlperature of the compound lard is gradual y reduced to about 80degrees Fahrenheit. when it is drawn off and allowed a to stan in areceptacle undisturbed until it reaches the temperature of the air. Whenthis is done the compound lard is free from granulation, consisting of abody of uniform,

"free overflow'pipe at its top, an open vent pipe leading upward fromthe interior of the cylinder, a pipe to conduct steam into the bottom ofthe space formed by the double wall, a pipe to carry water to the bottomof the said space, a feed pipe for oil and melted stearin leading intothe interior of the cylinder, and a dlscharge pipe for the saidmaterials after the same are mixed, combined with astufling boxat-'either end of the 'cylinder, a rotary shaft which extends entirelythrough the cylinder and the stuffing boxes of the same and. a system ofagitating arms or blades which extend radially from the said shaft andare spirally disposed thereon, substantially. as specified.

2. In an apparatus for the purpose described, a closed stationarycylinder having a double wall whereby a surrounding space is formed forthe reception of steam and water, the saidspace havingan open and freeoverflow pipe at its top, an open vent pipe leading upward from theinterior of the cylinder, a pipe to conduct steam-into the bottom of thespace formed by the double wall, a pipe to carry water to the bottom ofthe said space, a feed pipe'for oil and melted stearin leading into theinterior of the cylinder, and a discharge pipe for the said materialsafter the same are mixed, combined with an exterior stuifing box 'ateither end of the cylinder, .a rotary shaft which extends entirelythrough the cylinderand the stufling boxes of the same, and a system ofagitating arms or blades which extend radially from the said shaft andare spirally dlsposed thereon, substantially as specified.

-WILLIAM MATTHEISS. Witnesses:

THOMAS G. HUIL,

T. HOWARD.

